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756 results for “Plankton”
FIGURE 4 in Planktonic Ctenophora of the Madeira Archipelago (Northeastern Atlantic)
FIGURE 4. Photographies of (A1) Cestum veneris Lesueur, 1813 and (A2) the purplish-black pigment on its wingtips; (B) Beroe sp. Müller, 1776. Photo credit: C. veneris: F. Gizzi; Beroe sp.: M. Buzinkai
Heatwave induced invertebrate predation reshapes the plankton community
<p>Climate change stressors including warming and heatwaves can alter zooplankton composition and dominance patterns in shallow lakes, which can disrupt ecosystem function and curtail ecosystem services. To understand such changes, we performed a mesocosm experiment with controls reflecting the present temperature conditions and a treatment reflecting a future climate change scenario, including heatwaves of 0-8°C. In the future climate scenario, the predatory invertebrate, <em>Mesostoma</em> exerted a strong top-down control particularly on <em>Daphnia</em>, resulting in a switch in the herbivore dominance to <em>Ceriodaphnia</em>. Cyclopoid copepods were the least affected taxa but showed tendencies to sustain longer into the winter at elevated temperatures. A complementary predation experiment revealed that <em>Mesostoma</em> feed at a higher rate on <em>Daphnia</em> than on <em>Ceriodaphnia</em> and cyclopoid copepods. In addition to the food-chain alterations, the algal biomass and cyanobacteria increased with warming which has considerable implications for management of shallow lakes.</p>
Transfer efficiency of carbon, nutrients, and PUFAs in planktonic food webs under different environmental conditions
<p>We investigated the transfer of essential substances (carbon, nutrients, and polyunsaturated fatty acids) through plankton communities in 30 Polish lakes with different trophic status in the middle of summer. The results of our study revealed that different essential substances were transferred from phytoplankton to zooplankton with varying efficiencies. The average TTE of C, N, P, and the sum of ω-3 PUFA were 6.55%, 9.82%, 15.82%, 20.90%, respectively. Our results also show a large mismatch between the elemental and biochemical compositions of zooplankton and their food during the peak of the summer stagnation, which may further promote the accumulation of essential substances. There were also large differences in TTEs between trophic conditions, with the highest efficiencies in oligotrophic lakes and the lowest in dystrophic and eutrophic lakes. Therefore, our study indicates that disturbances like eutrophication and dystrophication similarly decrease the TTE of essential substances between phytoplankton and zooplankton in freshwater food webs.</p>
Ptychographic X-ray spackle tracking (PXST) scan of the biomineralized shell of a marine planktonic diatom
<p>The PXST scan of the biomineralized shell of a marine planktonic diatom sample measured at P11 beamtime of the PETRA III synchrotron radiation facility. The beam was focused with a pair of MLLs with focal lengths of 1.25 mm and 1.15 mm and numerical apertures of 0.014 and 0.015, in the vertical and horizontal directions, respectively. The X-ray beam photon energy was 17.5 keV.</p>
Supplementary material 1 from: Wejnerowski Ł, Aykut TO, Pełechata A, Rybak M, Dulić T, Meriluoto J, Dziuba MK (2022) Plankton hitch-hikers on naturalists' instruments as silent intruders of aquatic ecosystems: current risks and possible prevention. NeoBiota 73: 193-212. https://doi.org/10.3897/neobiota.73.82636
Detailed methodology of toxicological analyses performed for the purpose of this study and the results in the graphical form
Supplementary material 7 from: Wejnerowski Ł, Aykut TO, Pełechata A, Rybak M, Dulić T, Meriluoto J, Dziuba MK (2022) Plankton hitch-hikers on naturalists' instruments as silent intruders of aquatic ecosystems: current risks and possible prevention. NeoBiota 73: 193-212. https://doi.org/10.3897/neobiota.73.82636
Concentration of ammonium, nitrate, orthophosphates in the Kierskie Lake filtrates (Resident(-), Resident(+)) at endpoint of the second experiment
Supplementary material 5 from: Wejnerowski Ł, Aykut TO, Pełechata A, Rybak M, Dulić T, Meriluoto J, Dziuba MK (2022) Plankton hitch-hikers on naturalists' instruments as silent intruders of aquatic ecosystems: current risks and possible prevention. NeoBiota 73: 193-212. https://doi.org/10.3897/neobiota.73.82636
Top view of the content of two randomly selected beakers of Biosecurity(–) treatment after seven days of incubation in a phytotron
Supplementary material 3 from: Wejnerowski Ł, Aykut TO, Pełechata A, Rybak M, Dulić T, Meriluoto J, Dziuba MK (2022) Plankton hitch-hikers on naturalists' instruments as silent intruders of aquatic ecosystems: current risks and possible prevention. NeoBiota 73: 193-212. https://doi.org/10.3897/neobiota.73.82636
Basic information about the Gopło Lake and some characteristics of the surface water measured during field campaigns
Laser ablation depth profile data for different IODP and ODP Sites and age intervals from Voigt et al. "Assessing the recrystallisation of planktonic foraminifera in Pelagic sediments and the reliability of Mg/Ca values with Laser Ablation (LA-) ICP-MS"
<p>These files contain the final processed laser ablation ICP-MS depth profiles of Mg/Ca and Sr/Ca through the shell walls of fossil planktonic foraminifera tests from specific time intervals from International Ocean Discovery Program (IODP) Sites U1334, U1335, U1336, U1337, U1338 and Ocean Drilling Program (ODP) SIte 1218 in the eastern equatorial Pacific.</p> <p>These data are from Voigt et al. "Assessing the recrystallisation of planktonic foraminifera in Pelagic sediments and the reliability of Mg/Ca values with Laser Ablation (LA-) ICP-MS", a manuscript submitted to the journal <em>Paleoceanography and Paleoclimatology</em></p>
WHOI plankton dataset
Open the record for dataset details and reuse information.
FIGURE 2 in Invasion of a Holarctic planktonic cladoceran Daphnia galeata Sars (Crustacea: Cladocera) in the Lower Lakes of South Australia
FIGURE 2. Morphology of Daphnia (Daphnia) galeata from Lake Albert (A-B) and Lake Alexandrina (C-F), South Australia. A, invader D. galeata (1) together with two indigenous taxa, D. lumholtzi (2) and D. cf. carinata (3). B, anterior body half. C- D, two different females. E, head. F, postabdomen. Scale bar 0.1 mm (except of A).
FIGURE 1 in Invasion of a Holarctic planktonic cladoceran Daphnia galeata Sars (Crustacea: Cladocera) in the Lower Lakes of South Australia
FIGURE 1. Sampled water bodies in Australia. A–B, position of the Lower Lakes in Australia. C-D, recent state of Lake Albert. E, Lake Alexandrina at Tauwitcherie barrage during the 2001-2010 drought. Look at the water level of these two lakes. B, from Google Earth; E, courtesy of the ABC News (Australian Broadcasting Corporation).
FIGURE 4 in Invasion of a Holarctic planktonic cladoceran Daphnia galeata Sars (Crustacea: Cladocera) in the Lower Lakes of South Australia
FIGURE 4. Split network of haplotypes of the mitochondrial cytochrome c oxidase subunit I (COI) gene in Daphnia galeata.
FIGURE 3 in Invasion of a Holarctic planktonic cladoceran Daphnia galeata Sars (Crustacea: Cladocera) in the Lower Lakes of South Australia
FIGURE 3. Maximum likelihood tree of the subgenus Daphnia (Daphnia) based on combined data on the 12S + 16S mitochondrial gene sequences, with D. (Ctenodaphnia) magna as an outgroup. The support values of individual nodes are based on: Maximum likelihood (ML)/ Maximum Parsimony (MP)/Bayesian Inference (BI).
Supplementary material 2 from: Cahoon AB, Huffman AG, Krager MM, Crowell RM (2018) A meta-barcoding census of freshwater planktonic protists in Appalachia – Natural Tunnel State Park, Virginia, USA. Metabarcoding and Metagenomics 2: e26939. https://doi.org/10.3897/mbmg.2.26939
Figure 2. Rarefaction analysis estimates demonstrate that family and genus collections were approaching saturation :
Data and code for Freshwater diatoms diversify and turn over faster than marine in both planktonic and benthic habitats
<p>Data and R scripts to run the analyses in the diatom muhisse paper. See also the 'Running MuHiSSE' vignette in the R package hisse.</p>
FIGURE 4 in Biogeography and co-occurrence of 16 planktonic species of Keratella Bory de St. Vincent, 1822 (Rotifera, Ploima, Brachionidae) in lakes and reservoirs of the United States
FIGURE 4. Co-occurrence matrix for ten Keratella species. All other taxon pair combinations showed no significant negative or positive co-occurrence correlations. (Abbreviations: Amer = K. americana, Tect = K. tecta, Quad = K. quadrata, Taur = K. taurocephala, Trop = K. tropica, Cras = K. crassa, Disp = K. quadrata dispersa, Earl = K. earlinae, Test = K. testudo, Coch = K. cochlearis)
FIGURE 2 in Biogeography and co-occurrence of 16 planktonic species of Keratella Bory de St. Vincent, 1822 (Rotifera, Ploima, Brachionidae) in lakes and reservoirs of the United States
FIGURE 2. Distributions of 15 species of Keratella within nine agglomerated ecoregions of the continental U.S. Each circle represents one sample; circle size represents total biomass (µg dry weight L-1) for that species in a sample. Biomass values for each species are set to individual scales.
FIGURE 1 in Biogeography and co-occurrence of 16 planktonic species of Keratella Bory de St. Vincent, 1822 (Rotifera, Ploima, Brachionidae) in lakes and reservoirs of the United States
FIGURE 1. Dorsal views of the loricas of 15 species of Keratella. a) Keratella americana, b) Keratella cochlearis, c) Keratella crassa, d) Keratella earlinae, e) Keratella mixta, f) Keratella testudo, g) Keratella hiemalis, h) Keratella quadrata, i) Keratella quadrata dispersa, j) Keratella serrulata, k) Keratella taurocephala, l) Keratella tecta, m) Keratella ticinensis, n) Keratella tropica, o) Keratella valga. Scale bar represents 50 µm.
The planktonic stages of the salmon louse (Lepeophtheirus salmonis) are tolerant of end-of-century pCO2 concentrations
<p>Filename: <a href="https://datadryad.org/handle/10255/dryad.229362">WaterConditions</a><br> Routine measurements of water conditions including nutrient levels, alkalinity, water temperature and carbon chemistry as calculated from pH spectroscopy measurements and CO2SYS.</p> <p>Filename: <a href="https://datadryad.org/handle/10255/dryad.229363">Respiration data.xlsx </a><br> Oxygen Consumption rates of salmon lice according to age, stage, and pCO2 treatment.</p> <p>Filename: <a href="https://datadryad.org/handle/10255/dryad.229364">Lipid data.xlsx</a><br> Lipid volume of salmon lice measured with fluorescence microscopy.</p> <p>Filename: <a href="https://datadryad.org/handle/10255/dryad.229365">JC10 data.xlsx </a><br> Metabolic activity observed by measuring mitochondrial membrane potential (MMP). Membrane polarization in mitochondria is an indication of active cells. Polarized mitochondria were represented by red JC-10 aggregate (λ exc/λ em = 488/590 nm) while the green JC-10 monomer (λ exc/λ em = 488/525 nm) labeled the presence of mitochondrial membrane.</p> <p>Filename: <a href="https://datadryad.org/handle/10255/dryad.229368">Fatty Acid.xlsx</a><br> Fatty acid profiles of salmon lice according to stage and pCO2 treatment. Data is presented as mass (ng) of the identified fatty acid per individual animal. Columns are separated by the identified fatty acid, '?' indicate ambiguity in the location of the double bond.</p> <p>Filename: <a href="https://datadryad.org/handle/10255/dryad.229369">CHN data.xlsx</a><br> Carbon and nitrogen content of individual salmon lice eggs, nauplii, and copepodids.</p> <p> </p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.